Top roll support for drawing mechanisms of textile machines



B. JOHANSON TOP ROLL SUPPORT FOR DRAWING MECHANISMS OF TEXTILE MACHINESFiled Oct. 7, 1953 Dec. 18, 1956 W N a M 1% W W i x R T m Y E m Y a: B 8km mm 2: z 4 I & I N2 E a $N @N as g u a g m Q MN a U United StatesPatent 1 Q TOP ROLL SUPPORT F012 DRAWING MECH- ANISMS OF TEXTILEMACHINES Bertil Johanson, Goteborg, Sweden, assignor to SKFKugellagerfabriken Gesellschaft mit beschraenkter Haftung, Schweinfurt,Germany Application October 7, 1953, Serial No. 384,672

' 8 Claims. (Cl. 19-142) The present invention relates to drawingmechanisms of textile machines and in particular to an apparatus forsupporting a top roll of the drawing mechanism.

One of the objects of the present invention is to support the top rollof a drawing mechanism in such a way that it will automatically alignitself properly with the bottom roll associated therewith.

Another-object of the present invention'is to provide a means forprotecting the bearing of the top roll from foreign matter.

A further object of the present invention is to provide an easilyaccessible means for lubricating the top roll bearing.

An additional object of the present invention is to provide a top rollsupport means which permits the top roll to rest by' gravity on thebottom roll associated therewith to be driven by this. bottom roll andwhich at the same time enables the top roll to become automaticallyaligned with the bottom roll so that the top roll axis will be parallelto. the bottom roll axis.

A still further object of the present invention is to support the toproll in such a way that it may be simply and easily removed from therest of the apparatus.

Yet another object of the present invention is to provide a top rollsupport capable of accomplishing all of the above objects and at thesame time being made up of simple and ruggedly constructed parts whichprovide a reliable operation.

With the above objects in view, the present invention mainly consists ofa drawing mechanism for textile machines, this drawing mechanismincluding a top roll means formed with an axial bore and a bearing meanslocated in the axial bore to support the top roll means for rotationabout its axis. A support means is connected to the bearing means forsupporting the top roll means for free movement along a first arcuatepath extending toward the drawing plane and a second arcuate pathsubstantially parallel to the drawing plane.

The novel features which are considered as character'- istic fortheinvention are set forth in particular in the appended claims. Theinvention itself, however, both as to its construction and its method ofoperation, together with additional objects and advantages thereof, Willbe best understood from the following description of specificembodiments when read in connection with the accompanying drawings, inwhich:

Fig. l is a fragmentary partly sectional view showing a top roll supportconstructed in accordance with the present invention;

Fig. 2 is an elevational View of the top as seen from the left sidethereof; and

Fig. 3 is a side view of a top roll guiding arm of a slightly differentconstruction from the arm shown in Figs. 1 and 2.

Figs. 1 and 2 of the drawings show a top roll 11 which is adapted torest on a bottom roll 11, partly shown in Fig. 2 of the drawingmechanism to be driven thereby.

roll of Fig. l

The top roll 11 has a weight sufi'icient to provide the necessarypressure between the top and bottom rolls. The top roll 11 is formedwith an axial bore in which a tubular member 10 is located, this member10 being fixed to top roll 11 so as to rotate therewith and in efiectform a part thereof.

The tubular member 10 is itself formed with an axial bore havingportions of different diameters. Thus, the portion 103 of this axialbore at the right hand end thereof, as viewed in Fig. 1, is of thesmallest diameter and. adjoins at its left end a bore portion 102 of alarger di-- ameter which in turn adjoins at its left end a bore por tion101 of a still larger diameter, shoulder 104 being;

and beyond sleeve 19 into bore portions 101 and 102,

this shaft 17 also being formed with a pair of annular groovesv in whichball members 18 are located so that the. parts 17-19 form a ball bearingsupport which allows the top roll means 10, 11 to freely turn about itsaxis.

A tubular shaft 16 is press fitted at its right hand end, as viewed inFig. 1, on the left end portion of shaft 17, and a pair of annularprojections 161 and 162 extend from the outer surface of shaft 16 up tothe inner face of tubular member 10 and up to the inner face of the leftend portion of bearing 19, as viewed in Fig. 1, so as to prevent foreignmatter from gaining access to bearing 19 through the bore portion 101. Alubricating means, such as a grease fitting 20, is fixed'to the tubularmember 10 over bore portion 103 so as to seal the space at the right ofbearing 19, as viewed in Fig. 1.

A top roll guiding arm 12 has an intermediate substantially straightportion and a pair of opposite end portions 122 and 123 which areperpendicular to the intermediate portion thereof and which extend inopposite directions from opposite ends of this intermediate portion,respectively. The end portion 123 has its free end formed with a borethrough which shaft 16 passes and located opposite the bore portion 101against a shoulder of shaft-16, this shaft 16 being threaded at its freeend and carrying a lock washer 15 and a nut 14 to fix the guide arm 12to the shaft 16 in the manner shown in Figs. 1 and 2.

It will be noted that the straight end portion 122 of arm 12 is parallelto a central plane a-a of the top roll normal to the axis thereof andthat the intermediate portion of arm 12 is located opposite the outerworking face of roll 11, is parallel to the axis of the top roll, andextends up to the plane aa, the free end portion 122 of arm 12 beinglocated in plane aa. The end portion 122 of arm 12 is formed with a bore121 through which a U-shaped rod 22 extends, this rod 22 having one freeend 222 which extends into a recess of a stationary frame part 13 andhaving a threaded free end 223 extending through a bore of frame part 13and carrying a nut 24 which fixes rod 22 end portion 122 of arm 12 inplane a-a about the curved part of rod 22 passing through bore 121enables the top roll means 10, 11 to be freely turnable along an arcuatepath in the direction of arrow A extending downwardly toward the drawingplane. On the other hand, the capa Patented Dec. 18, 1956 to and'carryin'g said rodt bility of. arm 12 to move freely along axis bb of rod 22whose center is at enables the top roll means 10, 11 to move freelyalong a second arcuate path in the direction of arrow B which isparallel'to the drawing plane. Thus} the'top roll 11 is capable ofautomatically aligning itself withlthe bottom roll so as" to have'itsaxis parallel to the bottom roll axis, and also the top roll can freelyrest with its own weight on the bottom roll.

the top roll so'that the grease fitting 20 is free'ly-accessible andthat the'annular projections 161 and 162 as well as the fitting2ti-protect the bearing 1719" from foreign matter. Also, it is a simplematter to accommodate bear 'ings of various lengths within'the tubularmember 10.

Although the top roll of Fig. 1 may be removed from frame part1? byremoval of nut 24 and from arm 12' by removal of nut 14, the guide arm'36 of Fig. 3 provides an even easier removability of the top roll sincethe portions 301'and'302, respectively correspond to portions 122 j and12-3 of arm 12, are respectively formed with substantially L-shapedcutouts through which the rod 22 and a shaft 16 respectively extend, arm30 being otherwise iden tical with arm 12'and connected to the apparatusin the same way. Thus, with a guide arm 30 it isonly necessary to movepart 301 ofi rod 22 which passes through the It should-be noted that theguide arm 12 is. located on only'one side" of bearing meanslocated insaidbore to support 'said top roll means for free rotation about itsaxis; a shaft fixed to saidbearing means and extending through one endof saidaxial bore beyond said top roll means; an elongated guide armhaving an intermediate substantially straight portion and a pair ofopposite substantiallystraight end portions substantially perpendicularto said intermediate portion and extending in opposite directions from'opposite ends of said intermediate portion, respectively, one,

of said end portions having a' free, end lea-area op osite said one endof said bore and fixed tofsaid shaftaaud said intermediate portion beinglocated opposite the outer 'working face of said toprollmeans,"beingisubstantially parallel to the axis of said top rollmeans, and extending L-shaped cutout of portion 301 of arm and his onlya necessary to loosen nut 14 slightly to separate shaft 16 from portion302 of arm 30. A Wing nut may replace nut 14 for this purpose. The arm30 is particularly, suitable when connected to a support which cannot beremoved. It will be understood that each of the elements de" scribedabove, or two or more together, may also find a useful application inother types of drawing mechanisms differing from the types describedabove.

While the invention has been illustrated and described as embodied intop roll supports for drawing mechanisms,

. it is not intended to be limited to the details shown, since variousmodifications and structural. changes may be made without departing inany way from the spirit of the present invention. a

'Without further analysis, the foregoing will so fully reveal the gistof the present invention that others can'by applying current knowledgereadily adapt it for various applications without omitting featuresthat, from the standpoint of prior art, fairly constitute essentialcharacteristics of the generic or specific aspects of this inventionand, therefore, such adaptations should and are intended.

to be comprehended within the meaning and range of equivalence of thefollowing claims.

What is claimed as new and desired to be secured by Letters Patent is: V

.1. In a drawing mechanism for spinning machines, in

combination, top roll means formed with an axial bore;

bearing means located in said bore to support said top roll means forfree rotation about its axis; a shaft fixed to said bearing means andextending through one'endof said axial bore beyond said top roll means;an' elongated guide arm having an intermediatesubstantially straightportion and a pair of opposite substantially straight end portionssubstantially perpendicular to said intermediate portion and extendingin opposite directions fromopposite ends of said intermediate portion,respectively, one

of said end portions having a free end located'jopposite' 7 said one endof said bore andfixed to said shaft; and said intermediate portion beinglocated opposite the outer working face of said top roll means, beingsubstantially. parallel to the axis of said top roll means,andextending' up to a substantially central plane of 'said top'iroll:means normal to said axis thereof, the other of said end portions ofsaid arm being located in said plane and having a free end formed-with acutoutpassing therethrough;- asubstantially U-shaped rod having acentral curved-portion passing through said cutout; and a stationaryframepart fixed 2; In a drawing mechanism for. spinning- -machines; in

a combination; top roll means formed with an axial bore;

up to a substantially central plane of said top roll means normal tosaid axis thereof, the other of said end portions or" said arm beinglocated in said plane and having a free end formed with a cutout passingtherethrough; a substantially U-shaped rod having a centralcurvedportion passing through said cutout and havinga pair of free end portionslocated distant from said cutout on opposite sides of said centralplane,-respectively; and a stationary frame part fixed to. said free endpor'tionsof said rod to l carry the same 3. In a drawing mechanism asdefined in claim 1', said one end portion of said arm being removablyfixed. to; said shaft and said cutout in said other end portiofi'of saidarm extending to the'outer periphery ofsaid arin.

so that the arm may be removed from said 'U-shapedrod i while the latterremains stationary.

-4. In a drawing mechanism for textile machines in V combination, astationary frame part; top r oll means v, formed with an axial bore;bearing means located insaid 1 axialbore to support said top roll meansfor free rotationf: about its axis; a shaft fixed to said bearing meansand], extending'through one end ofsaid axial bore'beyond said top rollmeans; an elongated guide arm haying an inter mediate portion and twoopposite substantially straight end portions substantially perpendicularto said roll me ns; j axis and extending in opposite directions, fromopposite,

ends of said intermediate portion, respectively,' the first of said endportions having a freeend located opposite thatthe center of the rollmeans moves in a first plane passing through said roll means axis and'said free enil" of said second end portion along an arcuate path hawgjits center approximately in said free end of'flsaid secon end portionand the other of said directions of movement" being such that saidcenter of said roll means moves in a second plane normal to saidfirsfplan'e' and passingfa'l through the free end of said secondend'por'tion along, an arcuate path having its center also approximatelyin said free end of said second" end portion;

5. In a drawing mechanism for textile machi'u combination, a stationaryframe part; top roll means, formed with an axial bore; bearingmeanslocated in said? axial bore to. support said top roll-means forfreerotation about its'axis; a shaft. fixed tosaid bearing means and;extending through one end of said axial bore beyond 'said top'rollmeans; an elongated guide arm having aniin mediate portion and'twoopposite substantially straig t" endportions substantially perpendicularto's aid roll means axis and extending in opposite'directions from'oppbends of said intermediate portion, respectively,

said one end of said bore" a'nd fixed to s'aid shaft, intermediateportion beiriglocated opposite theofit working face of said toprollmeans, and the s 'eccnid or? said end portionslocated .in a planepassing through the r I, I, V I hefirst. of sald end portions having a'free eridlocatedf opposite center of said top roll normal to the axisthereof; and means attaching the free end of said second end portion tosaid stationary frame part for movement in two directions, one of saiddirections of movement being such that the center of the roll meansmoves in a first plane passing through said roll means axis and saidfree end of said second end portion along an arcuate path having itscenter approximately in said free end of said second end portion and theother of said directions of movement being such that said center of saidroll means moves in a second plane normal to said first plane andpassing also through the free end of said second end portion along anarcuate path having its center also approximately in said free end ofsaid second end portion; and a lubrication fitting fixed to said toproll means over the end of said axial bore distant from said shaft.

6. In a drawing mechanism for textile machines in combination, astationary frame part; top roll means formed with an axial bore; bearingmeans located in said axial bore to support said top roll means for freerotation about its axis; a shaft fixed to said bearing means andextending through one end of said axial bore beyond said top roll means;an elongated guide arm having an intermediate portion and two oppositesubstantially straight end portions substantially perpendicular to saidroll means axis and extending in opposite directions from opposite endsof said intermediate portion, respectively, the first of said endportions having a free end located opposite said one end of said boreand fixed to said shaft, said intermediate portion being locatedopposite the outer working face of said top roll means, and the secondof said end portions located in a plane passing through the center ofsaid top roll normal to the axis thereof; and means attaching the freeend of said second end portion to said stationary frame part formovement in two directions, one of said directions of movement beingsuch that the center of the roll means moves in a first plane passingthrough said roll means axis and said free end of said second endportion along an arcuate path having its center approximately in saidfree end of said second end portion and the other of said directions ofmovement being such that said center of said roll means moves in asecond plane normal to said first plane and passing also through thefree end of said second end portion along an arcuate path having itscenter also approximately in said free end of said second end portion;and an annular projection located on said shaft in said bore and extending across the space in said bore located about said shaft so as to sealsaid interior of said bore.

7. in a drawing mechanism for textile machines in combination, astationary frame part; top roll means formed with an axial bore; bearingmeans located in said axial bore to support said top roll means for freerotation about its axis; a shaft fixed to said bearing means andextending through one end of said axial bore beyond said top roll means;an elongated guide arm having an inter- -rnediate portion and twoopposite substantially straight end portions substantially perpendicularto said roll means axis and extending in opposite directions fromopposite ends of said intermediate portion, respectively, the first ofsaid end portions having a free end located opposite said one end ofsaid bore and fixed to said shaft, said intermediate portion beinglocated opposite the outer working face of said top roll means, and thesecond of said end portions located in a plane passing through thecenter of said top roll normal to the axis thereof; and means attachingthe free end of said second end portion to said stationary fr-ame partfor movement in two directions, one of said directions of movement beingsuch that the center of the roll means moves in a first plane passingthrough said roll means axis and said free end of said second endportion along an arcuate path having its center approximately in saidfree end of said second end portion and the other of said directions ofmovement being such that said center of said roll means moves in asecond plane normal to said first plane and passing also through thefree end of said second end portion along an arcuate path having itscenter also approximately in said free end of said second end port-ion;an annular projection located on said shaft in said bore and extendingacross the space in said bore located about said shaft so as to seal theinterior of said bore; and a lubrication fitting fixed to said top rollmeans over the end of said axial bore distant from said shaft.

8. in a drawing mechanism, in combination, a stationary frame part; asleeve formed in its inner face with a pair of annular grooves; a firstshaft extending through said sleeve, being spaced therefrom, and beingformed in its outer face with a pair of annular grooves located oppositesaid annular grooves of said sleeve, respectively; a plurality of ballmembers located in each pair of oppositely located grooves so that saidsleeve is freely turnable about said first shaft; a tubular memberhaving its inner face located against the outer face of said sleeve andextending beyond opposite ends of said sleeve so that said tubularmember and sleeves are turnable about said first shaft; a top roll fixedto and located about the outer face of said tubular member so that saidtop roll is also freely turnable about said first shaft; 2. second shaftfixed to an end portion of said first shaft and extending through oneend of said tubular member beyond the latter; a pair of annularprojections fixed to said second shaft and respectively extending up tothe inner face of said tubular member and the inner face of said sleeve;a lubrication fitting connected to said tubular member over the endthereof distant from said second shaft; a guide arm having anintermediate portion and two opposite substantially straight endportions extending in opposite directions from opposite ends of saidintermediate portion, respectively, the first of said end portionsconnected to a part of said second shaft located beyond said tubularmember, and the second of said end portions located in a plane passingthrough the center of said top roll normal to the axis thereof; andmeans attaching the free end of said second end portion to saidstationary frame part for movement in two directions, one of saiddirections of movement being such that the center of the roll meansmoves in a first plane passing through said roll means axis and saidfree end of said second end portion along an arcuate path having itscenter approximately in said free end of said second end portion and theother of said directions of movement being such that said center of saidroll means moves in a second plane normal to said first plane andpassing also through the free end of said second end portion along anarcuate path having its center also approximately in said free end ofsaid second end portion.

References Cited in the file of this patent UNITED STATES PATENTS2,623,245 Pierce et al Dec. 30, 1952 FOREIGN PATENTS 704,055 GermanyMar. 21, 1941

